How to build a back-end for 500,000 users per day

Mark Zubovsky

JavaScript Architect

UI/UX, Peopleware
@ InspiRational

Node.js

  • Based on the amazing V8 ( Chrome's JS engine )
  • C++ & JS inside
  • Created in 2009, almost 6 years of evolution
  • Maintained by a dedicated team ( Joyent )
    and dozens of contributors
  • Open-sourced

Node.js

Production & Highload ready

Walmart Mobile, PayPal Mobile, 

Linkedin Mobile, Netflix, Uber,

Yahoo Mail, MySpace, Yammer, 

Voxer, Trello

and so on...

Good fit for

  • API Layer ("Front" Tier)
  • RESTful services
  • Internet of Things
  • E-Commerce
  • Payment Processing
  • Micro-services

Success Stories

Walmart

Black Friday 2013. 200M visitors. 55% of US traffic — Mobile, handled by Node.js

Yahoo

2M+ requests per minute handled by Node services

PayPal

Node services doubled the number of RPS

The Business Case for Node.js

Business tenets:

Innovation, Productivity, Developer Joy,

Hiring/Retaining Talent, Cost Saving

Quotes from slides by Joe McCann

Javascript

Past

Slow. Animating snowflakes and other not serious stuff

Present

Fast. Very Optimized. The most popular language on GitHub.

Continiously improved by Google, Mozilla, Apple etc. 

Node.js is used by Enterprises. Still has drawbacks and bad parts

Future

ES6+, more optimizations, language improvements

Demo time

Components

  • Node.js
  • Express.js
  • In-memory storage
  • Angular for Front-end

Demo Goal

500K * 5 = 2.5M hits / 12 hrs
≈ 208K hits/hr
≈ 3.5K hits/min
≈ 60 RPS (120 in Peak)

 

≈15M users/mo

Other important parts

  • Hardware
  • OS Configuration
  • Database (Design, Config)
  • Reverse Proxy (e.g. nginx), CDN
  • Caching Layer
    — Cache everything you can

Thank you!

slides.com/demark

mzubovsky@irtechagency.com

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